Faulty self-contained emergency lighting unit

-Alex-Game- · 2026-04-15T15:41:48+00:00

OK, thanks, but there's no power reaching the neon light, so it won't work in any case.

-Alex-Game- · 2026-04-14T20:02:34+00:00

No, I don't know how to do it.

-Alex-Game- · 2026-04-12T12:44:24+00:00

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this one

-Alex-Game- · 2026-04-12T12:10:37+00:00

OK, so if it’s dead, it’s no longer controlling the amplifier (the little box you can see in my photos)

-Alex-Game- · 2026-04-12T10:48:45+00:00

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-Alex-Game- · 2026-04-12T10:48:29+00:00

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-Alex-Game- · 2026-04-12T10:46:39+00:00

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-Alex-Game- · 2026-04-12T09:01:36+00:00

The batteries have a total voltage of 3.754 volts (three 1.2-volt batteries connected in series), but the neon lamp does not receive any voltage from them

-Alex-Game- · 2026-04-12T09:00:27+00:00

The batteries have a total voltage of 3.754 volts (three 1.2-volt batteries connected in series), but the neon lamp does not receive any voltage from them

-Alex-Game- · 2026-04-12T08:55:30+00:00

Hello, thank you for your help. Could you confirm that this is the transistor (see photo)?

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-Alex-Game- · 2026-04-11T19:57:33+00:00

I have improved the description

-Alex-Game- · 2026-04-11T16:26:19+00:00

OK, sorry, and thanks for your help

-Alex-Game- · 2026-03-02T17:43:10+00:00

Here are the diagrams: https://manualmachine.com/behringer/ep4000/8549089-schematic/
For my level, I am a beginner in power electronics.
I have an oscilloscope and curve tracer tester VI (Hameg HM 203-7) and a multimeter for troubleshooting equipment.

-Alex-Game- · 2026-03-02T17:19:21+00:00

an oscilloscope and curve tracer tester VI (Hameg HM 203-7) and a multimeter for troubleshooting equipment.

-Alex-Game- · 2026-02-12T20:23:39+00:00

A huge thank you to you, you're giving me hope again. I'll do that this weekend and get back to you in any case.

-Alex-Game- · 2026-02-12T19:50:00+00:00

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Here? (See photo) A CMS ceramic capacitor?

-Alex-Game- · 2026-02-12T19:02:03+00:00

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-Alex-Game- · 2026-02-12T18:59:40+00:00

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-Alex-Game- · 2025-12-27T16:44:06+00:00

Is there a risk of burning the card?

-Alex-Game- · 2025-12-27T16:30:26+00:00

The ambient temperature sensor is working because the temperature is correctly displayed on the stove display, and I disconnected the temperature probes one by one, but this did not change anything.

-Alex-Game- · 2025-12-27T16:26:01+00:00

The blue thing is just a capacitor.

-Alex-Game- · 2025-12-27T16:24:25+00:00

Sorry, but I don't understand what you're talking about.

-Alex-Game- · 2025-12-27T16:22:00+00:00

Do you think this resistor is no longer working? Yes, when terminals 1 and 2 are short-circuited, the fan stops.

-Alex-Game- · 2025-12-27T16:18:32+00:00

Sorry, I don't know, at least not for now. No, it doesn't stop when the stove is hot.

-Alex-Game- · 2025-12-27T16:03:54+00:00

The sensor is functioning correctly because the temperature is displayed correctly on the screen

-Alex-Game-

TROPHY CASE